Wrench



. 1,519,910 H. GRAHAM WRENCH Filed Sept. 192s Fatented Dec. 16, lgz t,

-' units star HOl/VARD GRAHAM, OF NEW' BRA'UNFELS, TEXAS.

\VRENCH.

Application filed September 20, 1923. Serial No. 663,838.

To all whom it may concern:

Be it known that l, HOWARD GRAHAM, a citizen of the United States, residing at New Braunfels, in the county of Comal and State of Texas, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to tools and has for its object the provision of a wrench for use in connection with a pipe or nut, and which is readily adjustable to the work and capable of being made secure against possible displacement in the required adjusted position.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

lVhile the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet difierent conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the application:

Figure 1 is a side view of a wrench embodying the invention,

Figure 2 is a detail view of the wrench, a portion of the handle being broken away and the slide being in section,

Figure 3 is a detail sectional view on the line 3-3 of Figure 1,

Figure 4c is a perspective view of the movable jaw, and

Figure 5 is a perspective view of the locking dog.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference chancters.

The wrench comprises a shank 1 having a handle 2 at one end and a fixed jaw 3 at the opposite end. The back of the shank 1 is toothed, as indicated at 4. The side of the wrench is preferably graduated to admit of adjusting the wrench to the required size of work.

A slide 5 is mounted upon the shank 1 and may be of any preferred construction and, as shown, comprises parallel side plates 6 and a filler 7 interposed between an end of the plate and riveted or otherwise secured thereto. The inner face of the filler 7 is toothed to match the teeth l of the shank 1, whereby to hold the slide 5 in the required adjusted position. A movable jaw 8 is pivotally connected to the slide 5 and is disposed between the projecting ends of the plate 6 and is mounted upon a pivot 9 which, as shown, consists of a bolt. An elongated opening 10 is formed in the jaw 8 to receive the pivot 9, thereby admitting of the jaw having both a pivotal and a limited bodily movement, The jaw 8 is formed with an extension 11 which constitutes a fingerpiece, the same projecting beyond the slide and disposed about parallel with the shank 1. A. locking dog 12 is pivoted to the slide 5 and located between the projecting ends of the plate 6 and is mounted upon a pivot 13 which may consist of a bolt or other fastening. The locking dog 12 is provided with an extension 14;, which engages a recess 15 at the inner end of the fingerpiece 11.

When the movable jaw is locked, the parts assume the position shown most clearly in Figure 2, the shank 1 being held between the inner ends of the jaw 8 and dog 12 and the toothed face of the filler 7 of the slide. When it is required to adjust the movable jaw, the fingerpiece 11 is pressed inwardly towards the shank 1 which causes the jaw 8 and dog 12 to assume the position indicated by the dotted lines in Figure 2, whereby provision is had for moving the slide 5 to disengage the teeth thereof from the teeth 4, whereby the slide may be moved along the shank 1 to adjust the jaw 8 to suit the work, the parts being made secure by pressing the fingerpiece 11 outwardly whereby the parts assume the position shown by the full lines in Figure 2, thereby locking the slide and the dog 8 carried thereby.

What is claimed is:

1. A wrench comprising a shank having a fixed jaw, a slide movable on the shank, a jaw carried by the slide and having both a pivotal and a limited sliding movement, and a locking dog carried by said slide and operable by means of the combined pivoted and sliding movement of the movable jaw, whereby to secure or release the slide as required.

2. A wrench comprising a shank provided with a jaw, a slide on the shank, a jaw fingerpiece, and a locking dog pivoted to the slide and in engagement with the movable jaw and operablethereby to secure or re-.

lease the slide as required.

3. A wrench comprising a shank provided with a jaw, a slide on the shank, a carried by the slide and having both pivotal and a limited sliding movement relative to the slide and having an extension forming a. fingerpiece in which is formed a recess, and a locking dog pivoted to the slide and having an extensionengaging the recesslof the fingerpiece and-operable thereby to secure or release the slide as required.

4. A wrench comprising a shank, having a fixed jaw and provided along-its back with teeth, a slide on the shank and having teeth to engage the teeth of I the latter, a jaw provided with a finger piece and having an" elongated opening, a pivot connecting the" jaw with the slide and passing through the elongated'opening-of, the jaw, and a locking dog pivoted to the slide and operable by means of the adjustable jaw, whereby to secure or release the slide, as required;

In testimony whereof I aifix my signature in presence of two witnesses.

HOWARD GRAHAM. Witnesses J. R. Focus, FLORENCE OoHs. 

